Java布尔原语
示例
阿boolean可以存储两个值中的一个，任一true或false
boolean foo = true;
System.out.println("foo = " + foo); //foo=true
boolean bar = false;
System.out.println("bar = " + bar); //bar=假
boolean notFoo = !foo;
System.out.println("notFoo = " + notFoo); //notFoo=假
boolean fooAndBar = foo && bar;
System.out.println("fooAndBar = " + fooAndBar); //fooAndBar=false
boolean fooOrBar = foo || bar;
System.out.println("fooOrBar = " + fooOrBar); //fooOrBar=true
boolean fooXorBar = foo ^ bar;
System.out.println("fooXorBar = " + fooXorBar); //fooXorBar=true的默认值boolean是假的
boolean defaultBoolean; //defaultBoolean==否
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